Insulation Work; Refrigerant Pipe Insulation - Premium PAC366FC-I Service Manual

MLCAC-UTSM-2011-02

5. Insulation Work

5.1 Insulation material and thickness
1). Insulation material
Insulation material should adopt the material which is able to endure the pipe's temperature: no less than 70
less than 120 ℃ in the low -pressure side(For the cooling type machine, no requirements at the low-pressure side.)
Example: Heat pump type----Heat-resistant Polyethylene foam (withstand above 120 )
Cooling only type---- Polyethylene foam (withstand above 100 )
2). Thickness choice for insulation material
Insulation material thickness is as follows:
Refrigerant pipe
Drainage pipe

5.2 Refrigerant pipe insulation

1). Work Procedure
Before laying the pipes, the non
①
When the gas proof test
②
2). Insulation for non-jointing parts and non-connection parts
wrong
Gas pipe and liquid pipe should
not be put together to insulate
Installation
Pipe diameter (mm)
Φ6.4—Φ25.4
Φ28.6—Φ38.1
Inner diameterΦ20—Φ32
-jointing parts and non-connection parts should be heat insulated.
is eligible, the jointing area, expanding area and the flange area should be heat insulated
Insulate the gas pipe
℃
℃
(cooling only)
℃ in the high
Adiabatic material thickness
10mm
15mm
6mm
right
Insulate the gas pipe and
liquid pipe
Insulation Work
-pressure side, no
57